papules, nodules & plaques by color

Etiology

• white
  • calcinosis cutis
• flesh-colored
  • rheumatoid nodule
  • neurofibromas (von Recklinghausen's disease)
  • angiofibromas (tuberous sclerosis)
  • neuromas (MEN 2b)
  • adnexal tumors
    • basal cell epithelioma (basal cell nevus syndrome)
    • tricholemmoma (Cowden's disease)
  • primary cutaneous disorders
    • epidermal inclusion cyst
    • lipoma
• pink or translucent
  • amyloidosis
  • papular mucinosis
• yellow
  • xanthoma
  • tophi
  • necrobiosis lipoidica
  • pseudoxanthoma elasticum
  • sebaceous adenoma (Torre's syndrome)
• red
  • papules
    • angiokeratoma (Fabry's disease)
    • bacillary angiomatosis (AIDS)
  • papules &/or plaques
    • cutaneous lupus erythematosus
    • lymphoma cutis
    • leukemia cutis
  • nodules
    • panniculitis
    • cutaneous polyarteritis nodosa
    • systemic vasculitis
  • primary cutaneous disorders
    • arthropod bite
      • insect bite
      • spider bite
      • tick bite
    • cherry hemangioma
    • infections
      • erysipelas
    • sporotrichosis
    • polymorphous light eruption
    • lymphocytoma cutis (pseudolymphoma)
• red-brown
  • sarcoidosis
  • Sweet's syndrome
  • urticaria pigmentosa
  • mastocytosis
  • erythema elevatum diutinum (chronic leukocytoclastic vasculitis)
  • lupus vulgaris
• blue
  • venous malformations (blue rubber bleb syndrome)
  • primary cutaneous disorders
    • venous lake
    • blue nevus
• violaceous
  • lupus pernio (sarcoidosis)
  • lymphoma cutis
  • cutaneous lupus erythematosus
• purple
  • Kaposi's sarcoma
  • angiosarcoma
  • palpable purpura
• brown-black (see hyperpigmentation)
• any color
  • metastases

Additional terms

• papule
• plaque
• skin nodule